What is the primary use of a laryngeal mirror?

The primary use of a laryngeal mirror is to examine the mouth, teeth, and throat, which makes this option the correct choice. This specialized instrument is designed to provide a clear view of the larynx and surrounding areas by reflecting light and magnifying the structures for better visualization. This is particularly useful in medical settings where assessing the airway, vocal cords, and other oral structures is necessary, especially in the context of anesthesia and airway management.

The other options involve different instruments or purposes; measuring blood pressure typically requires a sphygmomanometer, administering medication often involves an inhaler or nebulizer, and performing dental procedures is usually done with specific dental tools rather than a laryngeal mirror. Therefore, the function of the laryngeal mirror is distinct and specifically tailored for examination rather than treatment or assessment in those other contexts.